Abstract We construct 4D flat Big Bang-Big Crunch cosmologies and Anti-de Sitter (AdS) planar eternally traversable wormholes using braneworlds embedded in asymptotically AdS5 spacetimes. The background geometries are the AdS5 magnetic black brane and the magnetically charged AdS5 soliton. respectively. The two setups arise from different analytic continuations of the same saddle of t... https://thebanyantreers.shop/product-category/pinch-pot/